(a)(i) List five external parts of a cock. (ii) Name three viral diseases that could affect poultry. (b) State five signs that could be observed in a sick f...

(a)(i) Five external parts of a cock

• Comb
• Wattle
• Beak
• Eye
• Shank (also feathers, wing, spur, claw and tail)

(a)(ii) Three viral diseases that affect poultry

• Newcastle disease
• Fowl pox
• Gumboro (infectious bursal disease), also Marek's disease and fowl plague (avian influenza)

(b) Five signs observed in a sick farm animal

• Loss of appetite/reduced feed intake.
• Dullness and isolation from the herd.
• Rough, staring coat or ruffled feathers.
• Reduced production (milk, meat or eggs).
• Abnormal body temperature (fever) and difficult breathing, with discharges from the eyes/nose.

(c) Terms used in livestock production

• Drenching: the administration of liquid medicine or drug through the mouth of an animal using a drenching gun or bottle.
• Dipping: the immersion or passing of an animal through a bath/tank containing an acaricide or pesticide solution to control external parasites such as ticks, lice and mites.

(d) Three body systems in farm animals

• Digestive system
• Respiratory system
• Circulatory system (also reproductive, nervous and excretory systems)